外星人.

外星人的地球遺產全集 : = 不可思議的超文明奇蹟 = Discover the secret civilization / by: (Language materials, printed)

別問了!外星人早就來過地球 / by: (Language materials, printed)

改變地球歷史的外星人 : = 外星人重返地球?!人類起源與星際文明大解密 / by: (Language materials, printed)

別問了!外星人早就來過地球 by: (Electronic resources)

外星人的足跡 : = 令人難以想像的超文明奇蹟 = Traces of aliens on earth / by: (Language materials, printed)

坐看井外 觀星尋碟 : = 我的幽浮探索 = The journal of UFO research / by: (Language materials, printed)

宇宙人UFO / by: (Language materials, printed)

小心!外星人就在你身邊 = = Watch out! aliens on your side / by: (Language materials, printed)

不明飛行體.

奇聞異象.

外星人.